<p>Sometimes just using a "star" on an email isn't enough. Sometimes, you need star categories for organising emails into a few different groups.</p><p>To do so in Gmail, just head to the Settings page. Halfway down the page, you should see an option to turn on options for using one star, four stars, or all stars.</p><p><a href="http://www.startupsmart.com.au/technology/use-star-categories-in-gmail/201301088587.html">Keep reading...</a></p>